An Assembly Line to Be Balanced Has Six Tasks in Precedence.The

question 71

Multiple Choice

An assembly line to be balanced has six tasks in precedence.The task times are shown in the following table.Based on demand forecasts,the output rate has to be 160 units per day.The line operates 8 hours a day.Compute the theoretical number of work stations required (N) . $$\begin{array} { | l | l | l | } \hline \text { Tasks } & \text { Immediate Predecessor } & \begin{array} { l } \text { Task Time in } \\\text { Minutes }\end{array} \\\hline \mathrm { A } & \text { NONE } & 3 \\\hline \mathrm { B } & \mathrm { A } & 1 \\\hline \mathrm { C } & \mathrm { A } & 2 \\\hline \mathrm { D } & \mathrm { B } , \mathrm { C } & 3 \\\hline \mathrm { E } & \mathrm { C } & 3 \\\hline \mathrm { F } & \mathrm { D } , \mathrm { E } & 2 \\\hline\end{array}$$

• A)3
• B)4
• C)5
• D)6

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Definitions:

Membrane-bound Receptor

A protein molecule embedded in the cell membrane that receives chemical signals from outside the cell and, upon binding with a specific ligand, initiates a cellular response.

Nuclear Receptor

Nuclear receptors are a class of proteins found within cells, that on binding with a specific ligand, can directly regulate the expression of specific genes.

Membrane-bound Receptor

A type of receptor located on the cell membrane that binds to external molecules to initiate a cellular response.

Eicosanoids

Bioactive lipid compounds derived from fatty acids, playing critical roles in inflammation, immunity, and as messengers in the central nervous system.